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Radiolysis
Items for "Radiolysis"
Inhibiting radiolysis of BTP molecules by addition of nitrobenzene
Autoradiolysis of extraction systems sometimes occurs during reprocessing of spent fuel, which may result in a change in the extraction behaviour of the system...
Keywords: Liquid-liquid extraction, Radiolysis, Americium, Nitrogen heterocycles, Triazines
02/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagOxidation and dissolution rates of UO2(s) in carbonate-rich solutions under external alpha irradiation and initially reducing conditions
This paper describes the effects of aqueous carbonate concentrations on the UO2 oxidation and dissolution rates under an alpha beam irradiation in a cyclotron...
Keywords: Colloids, UO2, Carbonate, Dissolution rate, Radiolysis
09/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagLeaching of zirconolite ceramics under H+ and He2+ irradiation
Zirconolite is a candidate host material for conditioning minor tri- and tetra-valent actinides arising from enhanced nuclear spent fuel reprocessing and partitioning, which can be disposed in a geological repository for nuclear waste...
Keywords: Zirconolite, Radiolysis, Hydrogen Peroxide, Leaching, Irradiation
09/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagModeling spent nuclear fuel alteration and radionuclide migration in disposal conditions
A physico-chemical model developed for spent fuel alteration was integrated in a global reactive transport model of a spent fuel disposal system, considering both decaying and stable isotopes, corroded steel canisters, bentonite backfills and a clayey host-rock...
Keywords: Radioactive waste, Radiolysis, Radionuclide migration, Reactive transport, UO2
09/2006 | Radiochimica Acta, Oldenbourg WissenschaftsverlagSpent fuel UO2 matrix alteration in aqueous media under oxidizing conditions
The effects of αβγ radiolysis of water on oxidation and dissolution of the UO2 matrix of spent fuel were investigated in aerated media...
Keywords: UOX spent fuel, Leaching, Uranium, Radiolysis, Surface reactivity
09/2007 | Radiochimica Acta, Oldenbourg WissenschaftsverlagEvaluation of selectivity and radiolysis behavior of some promising isonicotinamids and dipicolinamides as extractants
A series of long chain isonicotinamides (pyridine-4-carboxamides) and dipicolinamides (pyridine-2,6-dicarboxamides) have been prepared with different substituting groups and the extracting ability for Fe(III), Am(III), Eu(III), Sr(II), Co(II) and Cs(I) from nitric acid solutions has been studied...
Keywords: Extraction, Isonicotinamides, Dipicolinamides, Radiolysis, selectivity
09/2007 | Radiochimica Acta, Oldenbourg WissenschaftsverlagA kinetic study of UO2 dissolution and H2O2 stability in the presence of groundwater ions
Current reactors spent nuclear UO2 fuel, that will probably enter geologic formations for disposal, is assumed to get into contact with groundwater of a repository earliest after several thousands of years...
Keywords: Uranium dioxide, Radiolysis, radicals, Dissolution kinetics, Secondary phases
12/2007 | Radiochimica Acta, Oldenbourg Wissenschaftsverlag